Bump mint 1.9.3 -> 1.10.0 (transitive, `~> 1.8`/`~> 1.0` constraints already
admitted it) to clear two hex.audit security advisories that were blocking
`mix precommit`; unrelated to the version bump itself.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XZhJN4gZmvK6AhXxdKVp73